In other matches on the first day of the two-week tournament, Belinda Bencic saved a match point in beating Timea Babos, 1-6, 6-1, 7-6 (4), while wild card Genie Bouchard lost to qualifier Sachia Vickery, 6-3, 6-4.

Serena Williams returns to the tour for the first time in 14 months Thursday when she plays a first-round match.